Question

Из города А вышел поезд со скоростью 85 км/ч.Через 5ч он встретился с поездом,который вышел из города В на 2ч раньше и ехал со скоростью 92км/ч.Найдите расстояние между городами

Answer 1

85*5=425 проехал поезд из а
5+2=7 часов ехал второй
7*92=644 ехал поезд из б
644+425=1069км расстояние. Ответ 

Answer 2

Problem Analysis

We are given two trains, one starting from city A and the other starting from city B. The first train has a speed of 85 km/h and the second train has a speed of 92 km/h. After 5 hours, the two trains meet. We need to find the distance between the two cities.

Solution

To find the distance between the two cities, we can use the formula:

Distance = Speed × Time

Let's calculate the distance traveled by each train and then find the total distance between the two cities.

1. Train A: - Speed: 85 km/h - Time: 5 hours - Distance traveled by Train A = Speed × Time = 85 km/h × 5 hours = 425 km

2. Train B: - Speed: 92 km/h - Time: 5 hours + 2 hours (since Train B started 2 hours earlier) - Distance traveled by Train B = Speed × Time = 92 km/h × 7 hours = 644 km

3. Total distance between the two cities: - Distance traveled by Train A + Distance traveled by Train B = 425 km + 644 km = 1069 km

Therefore, the distance between the two cities is 1069 km.